Question

How to find the number of subsets in a given set?

Answer 1

In mathematics, especially in set theory, a set A is a subset of a set B, or equivalently B is a superset of A, if A is "contained" inside B, that is, all elements of A are also elements of B. A and B may coincide. The relationship of one set being a subset of another is called inclusion or sometimes containment.

+>Discovered a rule for determining the total number of subsets for a given set: A set with n elements has 2 n subsets.
+>Found a connection between the numbers of subsets of each size with the numbers in Pascal's triangle.
+>Discovered a quick way to calculate these numbers using Combinations.

Answer 2

no. of subsets are given by formula
2^n
here n is no. of element